Remove obsolete files (INSTALL, RELNOTES)

Copyrights was renamed to COPYRIGHTS to match case with other top-level files

Copyrights

@@ -1,26 +0,0 @@
-
-In general gPXE files are licensed under the GPL.  GPLed files are in
-general either from Linux or have been explicitly put under GPL by the
-authors.  The license for a file is usually documented at the top of
-the file.  
-
-A few files are inherited from FreeBSD netboot and therefore can be
-used under BSD or GPL.  Documented in this file are some of the
-non-GPL'ed files.  If the internal documentation for a file disagrees
-with what is documented in this file, the internal documentation for
-the file shall be override this file.
-
-File					Copyright status
-
-src/core/misc.c				BSD
-src/drivers/net/3c509.c			BSD
-src/drivers/net/3c509.h			BSD
-src/drivers/net/3c595.c			BSD
-src/drivers/net/3c595.h			BSD
-src/drivers/net/3c90x.c			Open Source
-src/drivers/net/epic100.c		None
-src/drivers/net/epic100.h		None
-src/drivers/net/ns8390.c		BSD
-src/drivers/net/ns8390.h		BSD
-src/arch/i386/include/bits/string.h	None
-

INSTALL

@@ -1,28 +0,0 @@
-If you don't want to install development tools, and have access to the
-Web, you can get ROM images made on demand from http://rom-o-matic.net/
-
-The documentation tarballs should be extracted in the top directory (the
-one you are reading this INSTALL document from). A top directory called
-doc will be populated. This way the links from index.html will work
-properly.
-
-More likely if you are unfamiliar with Etherboot you should read the
-documentation starting with index.html if you have a Web browser, or
-doc/text/userman.txt (after installing the documentation tarball) if you
-just have a plain text terminal.
-
-Also read RELNOTES for any additional recent information.
-
-Don't forget to check out the contrib/ directory which contains much
-contributed software and documentation. Please contact the authors of
-those packages directly for queries.
-
-If you are booting FreeBSD, enable -DELF_IMAGE (and optionally
--DAOUT_IMAGE) in Config. This should happen automatically now.
-
-The index.html file is the same as the one on the Etherboot home page at
-the time the distribution was made. Therefore some of the local file:/
-links from the Distribution section may not work.
-
-Etherboot was built using gcc 3.3.3 and binutils 2.15.91 from SuSE 9.2 but
-earlier 3.x versions will generally work.

RELNOTES

@@ -1,7 +0,0 @@
-gPXE 0.5.1
-
-gPXE is an implementation of the PXE specification with extensions to
-allow additional features such as booting via HTTP, iSCSI, and AoE.
-In generally, it is compatible with the PXE specification, and also
-supports Etherboot .nbi file loading.
-